CVE-2026-27129Disclosure(craftcms / craft_cms)

LOWCVSS 6.5 · MEDIUM

Signal is active with 3 mentions in latest observed window

Immediate actions

Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

Craft is a content management system (CMS). In versions 4.5.0-RC1 through 4.16.18 and 5.0.0-RC1 through 5.8.22, the SSRF validation in Craft CMS’s GraphQL Asset mutation uses `gethostbyname()`, which only resolves IPv4 addresses. When a hostname has only AAAA (IPv6) records, the function returns the hostname string itself, causing the blocklist comparison to always fail and completely bypassing SSRF protection. This is a bypass of the security fix for CVE-2025-68437. Exploitation requires GraphQL schema permissions for editing assets in the `<VolumeName>` volume and creating assets in the `<VolumeName>` volume. These permissions may be granted to authenticated users with appropriate GraphQL schema access and/or Public Schema (if misconfigured with write permissions). Versions 4.16.19 and 5.8.23 patch the issue.

craftcms CVEs Back to dashboard

0.0/ 10 priority

Sources & remediation

Patch / fix

Exploit / PoC references

https://github.com/craftcms/cms/security/advisories/GHSA-v2gc-rm6g-wrw9

Other references

https://github.com/craftcms/cms/security/advisories/GHSA-x27p-wfqw-hfcc

Weakness type (CWE)

CWE-918

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

AVAILABLE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

craft_cms

Threat summary

3 mentions across 1 observed day

What's happening

Technical details provided in 3 signals
Disclosure: 3 classified signals
3 total mentions across 1 day

Affected systems

Vendors

craftcms

Products

craft_cms

1 version affected across 1 product

Deep dive

Activity timeline3 mentions / 1d

Signal classification1 categories

Disclosure

3100.0%

Referenced assets3 URLs

By indicator

Full discourse3 posts

cvereports@_cvereports226d
Disclosure
CVE-2026-27129: Craft CMS SSRF: The IPv6 Ghost in the Machine A sophisticated Server-Side Request Forgery (SSRF) bypass in Craft CMS leverages the often-overlooked disparity between legacy PHP networking functions and modern dual-stack infrastructure.... https://cvereports.com/reports/CVE-2026-27129
Post summary
The report discloses a Server‑Side Request Forgery bypass in Craft CMS that exploits differences between legacy PHP networking functions and modern dual‑stack IPv6 infrastructure.
0000090
31 followersView on X
Vulmon Vulnerability Feed@VulmonFeeds226d
Disclosure
CVE-2026-27129 Server-Side Request Forgery Bypass in Craft CMS GraphQL Asset Mutation https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-27129
Post summary
A new SSRF bypass vulnerability (CVE-2026-27129) affecting Craft CMS GraphQL Asset Mutation has been disclosed, with details available via the provided link.
0000046
4.0K followersView on X
CVE@CVEnew226d
Disclosure
CVE-2026-27129 Craft is a content management system (CMS). In versions 4.5.0-RC1 through 4.16.18 and 5.0.0-RC1 through 5.8.22, the SSRF validation in Craft CMS’s GraphQL Asset mutat… https://www.cve.org/CVERecord?id=CVE-2026-27129
Post summary
The text offers a concise disclosure of an SSRF vulnerability in Craft CMS’s GraphQL Asset mutation, but does not provide PoC, exploitation details, or mitigation information.
0000081
56.5K followersView on X

CPE platform detail3 entries

Part:

Vendor:

Product:

Version:

Target SW:

Target HW:

3 of 3 entries

Part	Vendor	Product	Version	Target SW	Target HW
App	craftcms	craft_cms	-	-	-
App	craftcms	craft_cms	5.0.0	-	-
App	craftcms	craft_cms	5.0.0	-	-

Explore more

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